US4834817A - Gas-generating composition - Google Patents
Gas-generating composition Download PDFInfo
- Publication number
- US4834817A US4834817A US07/252,519 US25251988A US4834817A US 4834817 A US4834817 A US 4834817A US 25251988 A US25251988 A US 25251988A US 4834817 A US4834817 A US 4834817A
- Authority
- US
- United States
- Prior art keywords
- nitride
- alkali
- alkaline earth
- earth metal
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 48
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 150000004767 nitrides Chemical class 0.000 claims abstract description 35
- 239000003513 alkali Substances 0.000 claims abstract description 26
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 20
- -1 alkaline earth metal azide Chemical class 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 14
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 12
- 239000007800 oxidant agent Substances 0.000 claims abstract description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052723 transition metal Inorganic materials 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical group N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- CFJRGWXELQQLSA-UHFFFAOYSA-N azanylidyneniobium Chemical compound [Nb]#N CFJRGWXELQQLSA-UHFFFAOYSA-N 0.000 claims description 2
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 claims description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 2
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 claims description 2
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 150000001540 azides Chemical class 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910007277 Si3 N4 Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- KJUGUADJHNHALS-UHFFFAOYSA-N 1H-tetrazole Substances C=1N=NNN=1 KJUGUADJHNHALS-UHFFFAOYSA-N 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910021555 Chromium Chloride Inorganic materials 0.000 description 1
- 229910019830 Cr2 O3 Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910004742 Na2 O Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 101100386054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CYS3 gene Proteins 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910001914 chlorine tetroxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- JUINSXZKUKVTMD-UHFFFAOYSA-N hydrogen azide Chemical compound N=[N+]=[N-] JUINSXZKUKVTMD-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SHXXPRJOPFJRHA-UHFFFAOYSA-K iron(iii) fluoride Chemical compound F[Fe](F)F SHXXPRJOPFJRHA-UHFFFAOYSA-K 0.000 description 1
- 230000000622 irritating effect Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 101150035983 str1 gene Proteins 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B35/00—Compositions containing a metal azide
Definitions
- This invention concerns a gas-generating composition useful for inflating air bags for protection of occupants of motor vehicles. More particularly, this invention is directed to a gas-generating composition wherein no water or toxic substances are formed during the gas-generating reaction and wherein the solid components resulting from the reaction are in the form of a glassy slag.
- Air bags for protection of motor vehicle occupants must be inflated by the gas-generating composition within a fraction of a second, and they are generally constructed so that their gas content is released at a controlled rate.
- the propellant formed for such air bags must not contain any toxic components.
- Alkali and alkaline earth metal azides in particular which form nonpoisonous gas consisting essentially of nitrogen when reacted with an inorganic oxidizing agent, come into consideration as the gas supplying component of such compositions.
- Alkali and alkaline earth metal oxides which form during oxidation, are relatively difficult to separate and may reach the interior of the vehicle.
- silicon dioxide may be added to the gas-generating composition.
- the silicon dioxide and the alkali and alkaline earth metal oxides form a glassy slag, the separation of which presents no problems.
- composition disclosed by German Auslegeschrift No. 2,236,175, as used in practice contains 56% sodium azide on a weight basis, a relatively high proportion.
- sodium azide is highly toxic, comparable in this respect to potassium cyanide. Due to the constant increase in the number of motor vehicles which are equipped with such protection equipment, the disposal problems which arise when scrapping are appreciable. These problems result both from direct contamination of the environment, particularly soil and subterranean water with this highly toxic salt, and from the reaction of sodium azide on the scrap heap with acids. For example, sodium azide can come into contact with bacterial acids to form highly explosive heavy metal azides.
- azide-free compositions based on solid rocket fuels have been disclosed in German Auslegeschriften Nos. 2,334,063 and 2,222,506.
- these compositions have a serious disadvantage; carbon monoxide and other toxic gases are formed from the carbon containing components thereof.
- oxygen-free oxidizers such as chromium chloride, molybdenum disulfide or iron fluoride and tetrazoles
- a propellant is formed which contains free metal, i.e. chromium, molybdenum or iron, and in some cases, substances which are even substantially more toxic, such as potassium cyanide.
- free metal i.e. chromium, molybdenum or iron
- the reaction of this composition results in the formation of a relatively large amount of water, which condenses in the air bag. Further, due to the resulting heat of condensation, the air bag is heated, and aside from the mechanical stress, the bag material also has to withstand appreciable thermal stress. This problem is difficult to solve, because it runs counter to the desire, or necessity, of making the bag material as thin as possible, due to space constraints.
- Another object of the invention is to provide a new gas-generating composition with a relatively low azide content and a high stability which leads to a physiologically safe propellant and a solid residue which can be easily separated.
- compositions based on alkali or alkaline earth metal azides, an alkali or alkaline earth metal salt oxidizing agent and at least one nitride, wherein the nitride is present in an amount effective to bind the total alkali and alkaline earth metal as slag has highly desirable characteristics as the gas-generating composition for inflating air bags used for motor vehicles.
- the composition of the invention also contains silicon dioxide; when silicon dioxide is present together with the nitride, the amount of nitride and silicon dioxide is such that all alkali and alkaline earth metal is bound as slag.
- the solid residue formed as a result of the gas-generating reaction is a glassy slag and can be readily separated.
- chromium nitride is used as the nitride
- sodium azide as the azide
- potassium nitrate as the inorganic oxidizing agent
- the total solid residue is bound in the form of K 2 O . Cr 2 O 3 . Na 2 O, as a glassy slag.
- the sodium azide content is reduced to 14% by weight of the composition, which is a quarter of the sodium azide content of the composition disclosed in German Auslegeschrift No. 2,236,175.
- nitrogen is formed exclusively as the propellant; in particular, no water vapor is formed, which would lead to heat evolution when condensing.
- niobium nitride (NbN), tantalum nitride (TaN), chromium nitride (CrN), and dichromium nitride (Cr 2 N) are preferably used as the nitride.
- the proportion of nitrogen on a weight basis is appreciably less in the nitrides proferred according to the invention than in sodium azide, the proportion on a volume basis is comparable.
- the proportion of nitrogen by weight in sodium azide is 64.6%; by volume it is 1.2 normal liters per cc.
- the proportion by weight is only 21.2%; however, the proportion by volume is 1.02 normal liters per cc.
- the mixture illustrated in equation (2) forms only 0.19 normal liters of nitrogen per gram, as compared with about 0.31 normal liters of nitrogen per gram which are generated by the known composition disclosed by German Auslegeschrift No. 2,236,175.
- the yield of gas on a volume basis is 0.72 normal liters per cc. for the composition of equation (2), compared with 0.65 normal liters for the known composition.
- the formation of nitrogen by the composition of the invention is comparable to that of a conventional gas-generating composition with a high azide content. This is an important characteristic with respect to the size of the gas generator.
- the nitrides, azides and alkali or alkaline earth metal salt employed as the oxidizing agent are used in stoichiometric ratios, as illustrated in equation (2). It is self evident that slight deviations from the stoichiometric ratios are possible, providing that the course of the reaction is not changed in such a way that the solid materials formed by the decomposition of the composition are no longer obtained in the form of a slag.
- nitrides preferably used in accordance with the invention i.e. boron nitride. aluminum nitride, silicon nitride and the aforementioned nitrides of transition metals, are distinguished by an exceptionally high heat stability, and therefore, they are also used as ceramic materials. Accordingly, the composition of the invention is distinguished also by exceptional stability.
- any alkali or alkaline earth metal salt with a strongly oxidizing anion can be used as the oxidizing agent.
- potassium nitrate is preferred, since, despite a relatively low decomposition temperature, it is comparatively stable, hardly hygroscopic and, moreover, readily available.
- the composition of the invention may contain silicon dioxide.
- silicon dioxide a portion of the nitride can be replaced by silicon dioxide as the slag forming agent.
- the amount of nitride and of silicon dioxide should be such that the two together bond all of the alkali and alkaline earth metal as slag.
- silicon nitride/silicon dioxide mixture in a ratio by weight of silicon ntiride to silicon dioxide of only 10:90 and only a slight reduction in the combustion chamber pressure, it has been possible to achieve a considerable increase in the air bag pressure and a distinct reduction in particle emission compared to that attainable when pure silicon dioxide is used to bond all of the alkali and alkaline earth metal.
- the proportion of nitride in the mixture be at least 5 parts by weight, i.e. the slag forming agent must contain at least 5 parts by weight of silicon nitride and no more than 95 parts by weight of silicon dioxide.
- the proportion of nitride in such a mixture is as high as possible and the absence of silicon dioxide and use of a nitride, exclusively, to bond all of the alkali and alkaline earth metal is preferred.
- a 600 g. mixture of finely ground chromium nitride (CrN), potassium nitrate, and sodium azide was prepared in a molar ration of 3:2:1.
- the mixture was compressed into tablets with a diameter of 6 mm. and a thickness of 2.5 mm.
- About 80 g. of the tablets are introduces into a conventional gas generator housing for an air bag, as described in German Pat. No. 2,915,202 and ignited by means of an electrical igniter and a booster charge based on boron and potassiuim nitrate.
- the metal nitride burns with release of the theoretical amount of nitrogen.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Air Bags (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3733176 | 1987-10-01 | ||
| DE19873733176 DE3733176A1 (de) | 1987-10-01 | 1987-10-01 | Gaserzeugende masse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US4834817A true US4834817A (en) | 1989-05-30 |
Family
ID=6337378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US07/252,519 Expired - Fee Related US4834817A (en) | 1987-10-01 | 1988-09-30 | Gas-generating composition |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4834817A (enrdf_load_stackoverflow) |
| JP (1) | JPH01122986A (enrdf_load_stackoverflow) |
| DE (1) | DE3733176A1 (enrdf_load_stackoverflow) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948439A (en) * | 1988-12-02 | 1990-08-14 | Automotive Systems Laboratory, Inc. | Composition and process for inflating a safety crash bag |
| US5064483A (en) * | 1989-10-27 | 1991-11-12 | Bayern-Chemie Gesellschaft Fur Flugchemische Antriebe Mbh | Gas generating mass |
| US5401340A (en) * | 1993-08-10 | 1995-03-28 | Thiokol Corporation | Borohydride fuels in gas generant compositions |
| US5429691A (en) * | 1993-08-10 | 1995-07-04 | Thiokol Corporation | Thermite compositions for use as gas generants comprising basic metal carbonates and/or basic metal nitrates |
| US5439537A (en) * | 1993-08-10 | 1995-08-08 | Thiokol Corporation | Thermite compositions for use as gas generants |
| US5462306A (en) * | 1993-01-21 | 1995-10-31 | Trw Inc. | Gas generator for vehicle occupant restraint |
| US5472647A (en) * | 1993-08-02 | 1995-12-05 | Thiokol Corporation | Method for preparing anhydrous tetrazole gas generant compositions |
| US5500059A (en) * | 1993-08-02 | 1996-03-19 | Thiokol Corporation | Anhydrous 5-aminotetrazole gas generant compositions and methods of preparation |
| US5542704A (en) * | 1994-09-20 | 1996-08-06 | Oea, Inc. | Automotive inflatable safety system propellant with complexing agent |
| US5557062A (en) * | 1994-12-13 | 1996-09-17 | United Technologies Corporation | Breathable gas generators |
| US5592812A (en) | 1994-01-19 | 1997-01-14 | Thiokol Corporation | Metal complexes for use as gas generants |
| US5725699A (en) | 1994-01-19 | 1998-03-10 | Thiokol Corporation | Metal complexes for use as gas generants |
| US6149745A (en) * | 1994-12-27 | 2000-11-21 | Daicel Chemical Industries, Ltd. | Gas generant composition |
| US6416599B1 (en) * | 1996-12-28 | 2002-07-09 | Nippon Kayaku Kabushiki-Kaisha | Gas-generating agent for air bag |
| US20050067074A1 (en) * | 1994-01-19 | 2005-03-31 | Hinshaw Jerald C. | Metal complexes for use as gas generants |
| US6969435B1 (en) | 1994-01-19 | 2005-11-29 | Alliant Techsystems Inc. | Metal complexes for use as gas generants |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4402047C2 (de) * | 1994-01-25 | 1995-12-07 | Bayern Chemie Gmbh Flugchemie | Verfahren zur Herstellung einer gaserzeugenden Masse |
| DE102006024511A1 (de) | 2006-05-23 | 2007-11-29 | Ruag Ammotec Gmbh | Anzündsatz |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931040A (en) * | 1973-08-09 | 1976-01-06 | United Technologies Corporation | Gas generating composition |
| US4376002A (en) * | 1980-06-20 | 1983-03-08 | C-I-L Inc. | Multi-ingredient gas generators |
| US4386979A (en) * | 1979-07-19 | 1983-06-07 | Jackson Jr Charles H | Gas generating compositions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2407659A1 (de) * | 1974-02-18 | 1975-09-04 | Aerojet General Co | Substanzgemisch zur erzeugung eines ungiftigen gases |
| JPS5820920A (ja) * | 1981-07-28 | 1983-02-07 | Mitsui Eng & Shipbuild Co Ltd | 排気弁の冷却方法 |
-
1987
- 1987-10-01 DE DE19873733176 patent/DE3733176A1/de active Granted
-
1988
- 1988-09-29 JP JP63242644A patent/JPH01122986A/ja active Pending
- 1988-09-30 US US07/252,519 patent/US4834817A/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931040A (en) * | 1973-08-09 | 1976-01-06 | United Technologies Corporation | Gas generating composition |
| US4386979A (en) * | 1979-07-19 | 1983-06-07 | Jackson Jr Charles H | Gas generating compositions |
| US4376002A (en) * | 1980-06-20 | 1983-03-08 | C-I-L Inc. | Multi-ingredient gas generators |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4948439A (en) * | 1988-12-02 | 1990-08-14 | Automotive Systems Laboratory, Inc. | Composition and process for inflating a safety crash bag |
| US5064483A (en) * | 1989-10-27 | 1991-11-12 | Bayern-Chemie Gesellschaft Fur Flugchemische Antriebe Mbh | Gas generating mass |
| US5462306A (en) * | 1993-01-21 | 1995-10-31 | Trw Inc. | Gas generator for vehicle occupant restraint |
| US5682014A (en) * | 1993-08-02 | 1997-10-28 | Thiokol Corporation | Bitetrazoleamine gas generant compositions |
| US5472647A (en) * | 1993-08-02 | 1995-12-05 | Thiokol Corporation | Method for preparing anhydrous tetrazole gas generant compositions |
| US5500059A (en) * | 1993-08-02 | 1996-03-19 | Thiokol Corporation | Anhydrous 5-aminotetrazole gas generant compositions and methods of preparation |
| US5501823A (en) * | 1993-08-02 | 1996-03-26 | Thiokol Corporation | Preparation of anhydrous tetrazole gas generant compositions |
| US5401340A (en) * | 1993-08-10 | 1995-03-28 | Thiokol Corporation | Borohydride fuels in gas generant compositions |
| US5429691A (en) * | 1993-08-10 | 1995-07-04 | Thiokol Corporation | Thermite compositions for use as gas generants comprising basic metal carbonates and/or basic metal nitrates |
| US5439537A (en) * | 1993-08-10 | 1995-08-08 | Thiokol Corporation | Thermite compositions for use as gas generants |
| US5735118A (en) | 1994-01-19 | 1998-04-07 | Thiokol Corporation | Using metal complex compositions as gas generants |
| US5592812A (en) | 1994-01-19 | 1997-01-14 | Thiokol Corporation | Metal complexes for use as gas generants |
| US5673935A (en) | 1994-01-19 | 1997-10-07 | Thiokol Corporation | Metal complexes for use as gas generants |
| US5725699A (en) | 1994-01-19 | 1998-03-10 | Thiokol Corporation | Metal complexes for use as gas generants |
| US6481746B1 (en) | 1994-01-19 | 2002-11-19 | Alliant Techsystems Inc. | Metal hydrazine complexes for use as gas generants |
| US20050067074A1 (en) * | 1994-01-19 | 2005-03-31 | Hinshaw Jerald C. | Metal complexes for use as gas generants |
| US6969435B1 (en) | 1994-01-19 | 2005-11-29 | Alliant Techsystems Inc. | Metal complexes for use as gas generants |
| US9199886B2 (en) | 1994-01-19 | 2015-12-01 | Orbital Atk, Inc. | Metal complexes for use as gas generants |
| US5542704A (en) * | 1994-09-20 | 1996-08-06 | Oea, Inc. | Automotive inflatable safety system propellant with complexing agent |
| US5557062A (en) * | 1994-12-13 | 1996-09-17 | United Technologies Corporation | Breathable gas generators |
| US6149745A (en) * | 1994-12-27 | 2000-11-21 | Daicel Chemical Industries, Ltd. | Gas generant composition |
| US6416599B1 (en) * | 1996-12-28 | 2002-07-09 | Nippon Kayaku Kabushiki-Kaisha | Gas-generating agent for air bag |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3733176A1 (de) | 1989-04-13 |
| JPH01122986A (ja) | 1989-05-16 |
| DE3733176C2 (enrdf_load_stackoverflow) | 1989-08-10 |
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